Here is the hack I've been working on this year (MNSMBDS). The hack progression is too slow because I have little time to work on this hack , so I've only completed the firstthe first and secondfive worlds till now. I hope you like it!

I agree with StapleButter. A hack isn't better with new tilesets, custom music, and new sprites and backgrounds. It's all about the levels. I think that a hack is better when you have good levels, because tilesets and music are decorative.
I got 'd!!
_________________________CSMB is cancelled. Instead, I'll be doing a mini hack soon.

1. Invisible Platforms - I understand that you want the Buzzy Beetles to be a "guide" for where the platforms are, but if I recall correctly, someone tried this before and it didn't go well with anybody else. If someone had defeated those Buzzied before they realized that they needed them alive, they'll be stuck with blind jumps, literally.

2. Thwomp/Powerup Spam - The way all of the Thwomps are squeezed together looks bad, you should try to avoid that, you should place less of them and side-by-side so that doesn't happen. And giving Mario many Fire Flowers at once is a bit pointless, as you can only store one.

Also I have to say one more thing. In 1-1 , underground part. When you got the star it's really easy to get a lot of 1UPS. A lot of people will play this level to have 99 lives. Also, it lags often. Ohterwise, the rest of it looks great especially the Bowser Jr. fight of W7. It looks very well!
_________________________CSMB is cancelled. Instead, I'll be doing a mini hack soon.

Why shouldn't you? Since Fr33ze and I did it in NSHB, everyone does it^^ Anyway, its just an idea. So you can of course use it.
To be honest: I hate all this "idea-stealing-thing". Useless war.
_________________________

1-1: the part with many Buzzy Beetles lags the game a lot. Also, I got in before getting the starman, meaning I had like 0.1% chance to be able to pass. Not cool. The starman effect also doesn't last long enough to kill them all. At best you get hit by the last one. I'd just remove this alltogether. This is bad design.

Also, when I saw those coins in a pit, I figured there was some secret in there, jumped in... and died. COINS SHOULD INDICATE A SAFE WAY, NOT SEND PLAYERS TO THEIR DEATH!

And the time limit is absurdly high. Even if you go through the secret part of the level, you don't need that many time.

1-2: right as you start, forbidden flowers. How cool. (well the thing works if the powerups are mushrooms, but if they're flowers you can fuck yourself, which is not cool)

And again, coins in a deadly pit.

Oh also the slope behaviors are a little glitched.

And then come those brick block pillars. How am I supposed to get past that? The pole under them implies that there's floor under them, so let's jump down... nope. Can't see any hidden block either. Don't know if I'm supposed to do some Kaizo trick or complete what appears to be an extra area.

I haven't played further. Aside from those issues, this hack has interesting design ideas. And no camera glitches. Compared to the average quality of NSMB hacks, this is nice.
_________________________Kuribo64 - RH-fucking-cafe - Kafuka